An improved design of an integrated optical isolator based on non-reciprocalMach–Zehnder interferometry |
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Authors: | Bahlmann N Lohmeyer M Wallenhorst M Dötsch H Hertel P |
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Institution: | (1) University of Osnabrück, 49069 Osnabrück, Germany |
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Abstract: | Non-reciprocal rib waveguide structures can be used to realize integrated optical isolators. In this paper, we propose a concrete design for a Mach–Zehnder interferometer type isolator for TM modes. Just one of the arms, which are of equal length, is a non-reciprocal magneto-optic waveguide. The rest of the interferometer is reciprocal. Required fabrication tolerances are estimated, and the entire isolator is simulated by applying a finite difference beam propagation method. |
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